From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Date: Wed, 3 Jul 2013 00:22:13 +0000 (+1000)
Subject: drivers/iio/inkern.c: fix iio_convert_raw_to_processed_unlocked()
X-Git-Tag: next-20130717~3^2~5
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=31019e11723d9dda9330647170f3492e95b2a901;p=karo-tx-linux.git

drivers/iio/inkern.c: fix iio_convert_raw_to_processed_unlocked()

When reading IIO_CHAN_INFO_OFFSET, the return value of iio_channel_read() for
success will be IIO_VAL*, checking for 0 is not correct.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Cc: <stable@vger.kernel.org>	[3.10.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 98ddc323add0..0cf5f8e06cfc 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -451,7 +451,7 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
 	int ret;
 
 	ret = iio_channel_read(chan, &offset, NULL, IIO_CHAN_INFO_OFFSET);
-	if (ret == 0)
+	if (ret >= 0)
 		raw64 += offset;
 
 	scale_type = iio_channel_read(chan, &scale_val, &scale_val2,